CN1216556C - Cigarette and filter with downstream flavor addition - Google Patents
Cigarette and filter with downstream flavor addition Download PDFInfo
- Publication number
- CN1216556C CN1216556C CN028086627A CN02808662A CN1216556C CN 1216556 C CN1216556 C CN 1216556C CN 028086627 A CN028086627 A CN 028086627A CN 02808662 A CN02808662 A CN 02808662A CN 1216556 C CN1216556 C CN 1216556C
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- Prior art keywords
- cigarette
- filter
- carbon
- adsorbent
- fragrance
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Links
- 235000019504 cigarettes Nutrition 0.000 title claims abstract description 189
- 239000000796 flavoring agent Substances 0.000 title claims abstract description 51
- 235000019634 flavors Nutrition 0.000 title claims abstract description 23
- 229910052799 carbon Inorganic materials 0.000 claims abstract description 135
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims abstract description 132
- 241000208125 Nicotiana Species 0.000 claims abstract description 76
- 235000002637 Nicotiana tabacum Nutrition 0.000 claims abstract description 76
- 239000000779 smoke Substances 0.000 claims abstract description 74
- 239000003463 adsorbent Substances 0.000 claims abstract description 72
- KAKZBPTYRLMSJV-UHFFFAOYSA-N Butadiene Chemical compound C=CC=C KAKZBPTYRLMSJV-UHFFFAOYSA-N 0.000 claims abstract description 34
- 238000011144 upstream manufacturing Methods 0.000 claims abstract description 24
- 238000009423 ventilation Methods 0.000 claims abstract description 21
- 239000007789 gas Substances 0.000 claims abstract description 19
- UHOVQNZJYSORNB-UHFFFAOYSA-N Benzene Chemical compound C1=CC=CC=C1 UHOVQNZJYSORNB-UHFFFAOYSA-N 0.000 claims abstract description 15
- YXFVVABEGXRONW-UHFFFAOYSA-N Toluene Chemical compound CC1=CC=CC=C1 YXFVVABEGXRONW-UHFFFAOYSA-N 0.000 claims abstract description 15
- IKHGUXGNUITLKF-UHFFFAOYSA-N Acetaldehyde Chemical compound CC=O IKHGUXGNUITLKF-UHFFFAOYSA-N 0.000 claims abstract description 10
- RRHGJUQNOFWUDK-UHFFFAOYSA-N Isoprene Chemical compound CC(=C)C=C RRHGJUQNOFWUDK-UHFFFAOYSA-N 0.000 claims abstract description 10
- NBBJYMSMWIIQGU-UHFFFAOYSA-N Propionic aldehyde Chemical compound CCC=O NBBJYMSMWIIQGU-UHFFFAOYSA-N 0.000 claims abstract description 10
- PPBRXRYQALVLMV-UHFFFAOYSA-N Styrene Chemical compound C=CC1=CC=CC=C1 PPBRXRYQALVLMV-UHFFFAOYSA-N 0.000 claims abstract description 10
- LELOWRISYMNNSU-UHFFFAOYSA-N hydrogen cyanide Chemical compound N#C LELOWRISYMNNSU-UHFFFAOYSA-N 0.000 claims abstract description 10
- 230000009467 reduction Effects 0.000 claims abstract description 9
- NLHHRLWOUZZQLW-UHFFFAOYSA-N Acrylonitrile Chemical compound C=CC#N NLHHRLWOUZZQLW-UHFFFAOYSA-N 0.000 claims abstract description 5
- 239000003205 fragrance Substances 0.000 claims description 111
- 229920002301 cellulose acetate Polymers 0.000 claims description 35
- 235000013355 food flavoring agent Nutrition 0.000 claims description 28
- 238000000034 method Methods 0.000 claims description 27
- 230000008569 process Effects 0.000 claims description 26
- 239000000203 mixture Substances 0.000 claims description 25
- 238000012856 packing Methods 0.000 claims description 23
- STNJBCKSHOAVAJ-UHFFFAOYSA-N Methacrolein Chemical compound CC(=C)C=O STNJBCKSHOAVAJ-UHFFFAOYSA-N 0.000 claims description 20
- 230000000712 assembly Effects 0.000 claims description 12
- 238000000429 assembly Methods 0.000 claims description 12
- 230000000391 smoking effect Effects 0.000 claims description 12
- 238000001914 filtration Methods 0.000 claims description 6
- 239000002245 particle Substances 0.000 claims description 6
- 239000003795 chemical substances by application Substances 0.000 claims description 4
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 claims description 3
- 230000001939 inductive effect Effects 0.000 claims 5
- 230000008602 contraction Effects 0.000 claims 4
- 238000010276 construction Methods 0.000 claims 1
- 239000000470 constituent Substances 0.000 abstract description 3
- HGINCPLSRVDWNT-UHFFFAOYSA-N Acrolein Chemical compound C=CC=O HGINCPLSRVDWNT-UHFFFAOYSA-N 0.000 abstract 2
- ZTQSAGDEMFDKMZ-UHFFFAOYSA-N butyric aldehyde Natural products CCCC=O ZTQSAGDEMFDKMZ-UHFFFAOYSA-N 0.000 abstract 1
- 239000000463 material Substances 0.000 description 29
- 210000000214 mouth Anatomy 0.000 description 23
- 239000000443 aerosol Substances 0.000 description 21
- 239000003570 air Substances 0.000 description 21
- 238000005507 spraying Methods 0.000 description 21
- 238000010790 dilution Methods 0.000 description 20
- 239000012895 dilution Substances 0.000 description 20
- 239000002250 absorbent Substances 0.000 description 16
- 230000002745 absorbent Effects 0.000 description 16
- 239000003610 charcoal Substances 0.000 description 12
- 230000005540 biological transmission Effects 0.000 description 9
- 238000001179 sorption measurement Methods 0.000 description 9
- 239000012071 phase Substances 0.000 description 8
- 239000000835 fiber Substances 0.000 description 7
- 230000008859 change Effects 0.000 description 5
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- 238000010521 absorption reaction Methods 0.000 description 4
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- 230000002349 favourable effect Effects 0.000 description 4
- 239000002594 sorbent Substances 0.000 description 4
- 238000012360 testing method Methods 0.000 description 4
- 239000012808 vapor phase Substances 0.000 description 4
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 description 3
- 235000013162 Cocos nucifera Nutrition 0.000 description 3
- 244000060011 Cocos nucifera Species 0.000 description 3
- 230000008901 benefit Effects 0.000 description 3
- 229910002091 carbon monoxide Inorganic materials 0.000 description 3
- 238000013461 design Methods 0.000 description 3
- 230000004048 modification Effects 0.000 description 3
- 238000012986 modification Methods 0.000 description 3
- 239000004014 plasticizer Substances 0.000 description 3
- 230000007704 transition Effects 0.000 description 3
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 2
- 229910021536 Zeolite Inorganic materials 0.000 description 2
- 239000002156 adsorbate Substances 0.000 description 2
- 150000001299 aldehydes Chemical class 0.000 description 2
- CREMABGTGYGIQB-UHFFFAOYSA-N carbon carbon Chemical compound C.C CREMABGTGYGIQB-UHFFFAOYSA-N 0.000 description 2
- 239000011203 carbon fibre reinforced carbon Substances 0.000 description 2
- 239000003245 coal Substances 0.000 description 2
- 238000007865 diluting Methods 0.000 description 2
- 239000003085 diluting agent Substances 0.000 description 2
- HNPSIPDUKPIQMN-UHFFFAOYSA-N dioxosilane;oxo(oxoalumanyloxy)alumane Chemical compound O=[Si]=O.O=[Al]O[Al]=O HNPSIPDUKPIQMN-UHFFFAOYSA-N 0.000 description 2
- 238000007599 discharging Methods 0.000 description 2
- 239000000945 filler Substances 0.000 description 2
- 150000002576 ketones Chemical class 0.000 description 2
- 239000012528 membrane Substances 0.000 description 2
- 239000004033 plastic Substances 0.000 description 2
- 238000003860 storage Methods 0.000 description 2
- URAYPUMNDPQOKB-UHFFFAOYSA-N triacetin Chemical compound CC(=O)OCC(OC(C)=O)COC(C)=O URAYPUMNDPQOKB-UHFFFAOYSA-N 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 239000010457 zeolite Substances 0.000 description 2
- 108010022579 ATP dependent 26S protease Proteins 0.000 description 1
- 229920000742 Cotton Polymers 0.000 description 1
- SMEGJBVQLJJKKX-HOTMZDKISA-N [(2R,3S,4S,5R,6R)-5-acetyloxy-3,4,6-trihydroxyoxan-2-yl]methyl acetate Chemical compound CC(=O)OC[C@@H]1[C@H]([C@@H]([C@H]([C@@H](O1)O)OC(=O)C)O)O SMEGJBVQLJJKKX-HOTMZDKISA-N 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 230000006978 adaptation Effects 0.000 description 1
- 239000012080 ambient air Substances 0.000 description 1
- 125000003118 aryl group Chemical group 0.000 description 1
- 238000009835 boiling Methods 0.000 description 1
- 125000002837 carbocyclic group Chemical group 0.000 description 1
- 150000001721 carbon Chemical class 0.000 description 1
- 229920002678 cellulose Polymers 0.000 description 1
- 239000001913 cellulose Substances 0.000 description 1
- 239000003153 chemical reaction reagent Substances 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
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- 238000005516 engineering process Methods 0.000 description 1
- 150000002168 ethanoic acid esters Chemical class 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 235000013773 glyceryl triacetate Nutrition 0.000 description 1
- 239000001087 glyceryl triacetate Substances 0.000 description 1
- 239000008187 granular material Substances 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
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- 238000004519 manufacturing process Methods 0.000 description 1
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- 229910052757 nitrogen Inorganic materials 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
- 230000000750 progressive effect Effects 0.000 description 1
- 230000000717 retained effect Effects 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
- 235000019605 sweet taste sensations Nutrition 0.000 description 1
- 238000010998 test method Methods 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
- 229960002622 triacetin Drugs 0.000 description 1
Images
Classifications
-
- A—HUMAN NECESSITIES
- A24—TOBACCO; CIGARS; CIGARETTES; SIMULATED SMOKING DEVICES; SMOKERS' REQUISITES
- A24D—CIGARS; CIGARETTES; TOBACCO SMOKE FILTERS; MOUTHPIECES FOR CIGARS OR CIGARETTES; MANUFACTURE OF TOBACCO SMOKE FILTERS OR MOUTHPIECES
- A24D3/00—Tobacco smoke filters, e.g. filter-tips, filtering inserts; Filters specially adapted for simulated smoking devices; Mouthpieces for cigars or cigarettes
- A24D3/04—Tobacco smoke filters characterised by their shape or structure
- A24D3/048—Tobacco smoke filters characterised by their shape or structure containing additives
-
- A—HUMAN NECESSITIES
- A24—TOBACCO; CIGARS; CIGARETTES; SIMULATED SMOKING DEVICES; SMOKERS' REQUISITES
- A24D—CIGARS; CIGARETTES; TOBACCO SMOKE FILTERS; MOUTHPIECES FOR CIGARS OR CIGARETTES; MANUFACTURE OF TOBACCO SMOKE FILTERS OR MOUTHPIECES
- A24D3/00—Tobacco smoke filters, e.g. filter-tips, filtering inserts; Filters specially adapted for simulated smoking devices; Mouthpieces for cigars or cigarettes
-
- A—HUMAN NECESSITIES
- A24—TOBACCO; CIGARS; CIGARETTES; SIMULATED SMOKING DEVICES; SMOKERS' REQUISITES
- A24D—CIGARS; CIGARETTES; TOBACCO SMOKE FILTERS; MOUTHPIECES FOR CIGARS OR CIGARETTES; MANUFACTURE OF TOBACCO SMOKE FILTERS OR MOUTHPIECES
- A24D3/00—Tobacco smoke filters, e.g. filter-tips, filtering inserts; Filters specially adapted for simulated smoking devices; Mouthpieces for cigars or cigarettes
- A24D3/06—Use of materials for tobacco smoke filters
- A24D3/14—Use of materials for tobacco smoke filters of organic materials as additive
-
- A—HUMAN NECESSITIES
- A24—TOBACCO; CIGARS; CIGARETTES; SIMULATED SMOKING DEVICES; SMOKERS' REQUISITES
- A24D—CIGARS; CIGARETTES; TOBACCO SMOKE FILTERS; MOUTHPIECES FOR CIGARS OR CIGARETTES; MANUFACTURE OF TOBACCO SMOKE FILTERS OR MOUTHPIECES
- A24D3/00—Tobacco smoke filters, e.g. filter-tips, filtering inserts; Filters specially adapted for simulated smoking devices; Mouthpieces for cigars or cigarettes
- A24D3/06—Use of materials for tobacco smoke filters
- A24D3/16—Use of materials for tobacco smoke filters of inorganic materials
- A24D3/163—Carbon
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Inorganic Chemistry (AREA)
- Cigarettes, Filters, And Manufacturing Of Filters (AREA)
Abstract
A cigarette comprises a tobacco rod and a multi-component filter comprising a bed of adsorbent and a flavor-releasing filter segment located downstream of the bed of adsorbent. In the preferred embodiment, the adsorbent is also flavor-bearing and comprises high surface area, activated carbon. As mainstream smoke is drawn through the upstream portion of the filter, gas phase smoke constituents are removed and flavor is released from the adsorbent bed. Thereafter additional flavor is released into the mainstream smoke as it passes through the flavor-releasing filter segment. Ventilation is provided to limit the amount of tobacco being combusted during each puff and is arranged at a location spaced downstream from the adsorbent bed to lower mainstream smoke velocity through the adsorbent bed. Preferably, the carbon bed comprises at least 90 to 120 mg or greater of carbon in a fully filled condition or 160 to 180 mg or greater of carbon in a 85 filled condition or better, which in combination with other features provides a flavorful cigarette that achieves significant reductions in gas phase constituents of the mainstream smoke, including 90% reductions or greater in 1,3 butadiene, acrolein, isoprene, propionaldehyde, acrylonitrile, benzene, toluene, styrene, and 80% reductions or greater in acetaldehyde and hydrogen cyanide.
Description
The field of the invention
The present invention relates to smoking product such as cigarette and especially, relate to and comprise the filter tip section that comprises adsorbent and fiber and/or net filtration mouth material and be designed for the cigarette of advantageously removing the gaseous component in the mainstream smoke.
Background of the present invention
Smoking product, cigarette especially generally comprises by the tobacco rod of the broken tobacco of wrapper/encirclement (cutting filler form usually) with tobacco rod and is the cylindrical filter that end-end concerns arrangement.Usually, filter tip comprises by core plug paper and is connected to cellulose acetate tow plug on the tobacco rod.The ventilation of mainstream smoke realizes by a row or multi-row perforation along the filter tip setting.These ventilations provide the diluting effect of the mainstream smoke of surrounding air to aspirating to reduce the transmission of tar.
Filter-tip particulate efficiency is defined as entering filter-tip tar levels usually and deducts and leave filter-tip tar levels, then divided by entering filter-tip tar levels.Ventilate and often reduce filter-tip particulate efficiency.
When lighting cigarette, the smoker is from the coal suction mainstream smoke of lighting end of cigarette.The downstream part that the cigarette of suction at first enters filter-tip upstream end portion and holds through the oral cavity (mouth) of contiguous cigarette subsequently.
Some cigarette having has been introduced the filter tip section of sorbent material such as active carbon, and these examples of material are described in US-A-2 881 770 (Tovey); US-A-3 353 543 (people such as Sproull); US-A-3 101 723 (people such as Seligman); With US-A-4 481 958 (people such as Ranier).Some commercially available filter tip has separately or is dispersed in carbon in the cellulose acetate tow particle or the granula of (as, absorbent charcoal material); Other commercially available filter tip has dispersion carbon line wherein; And other commercially available filter tip has so-called plug-space-Sai, chamber filter tip or the design of triple filter mouth.Commercially available filter-tip example is SCS IV dual solid charcoal filtering mouth and triple solid charcoal filtering mouth (from Filtrona international corporation); Three chamber filter tips (from Baumgartner); And ACT (from Filtrona international corporation).In addition referring to, people such as Clarke, World tobacco, p.55 (in November, 1992).Going through in US-A-5 404 890 and US-A-5 568 819 (people such as Gentry) of cigarette and filter-tip performance and composition found, incorporated it into the present invention as a reference at this.
The typical previous practice of plug-space-Sai type cigarette is arranged on ventilation on the position that is included in the adsorbent bed in this space so far, realizes the abundant interval of air vent and filter-tip buccal like this.Like this, smoker's lip can not stop air vent.But these are provided with the filtration validity that often reduces adsorbent, because it often increases the speed of mainstream smoke at least a portion is sorbent bed.
Have the filter-tip various cyclic configuration of carrying carbocyclic ring shape filter region and be disclosed in prior art.For example, european patent application No.579,410 have provided many cigarette embodiments, and wherein ring-type carries that carbon zone surrounds porous filter material or by the film formed empty tubular cavity of vapor phase porous.Similarly, US-A-3 894 545 people such as () Crellin has provided and has had that the ring-type of surrounding the vapor phase perforated membrane is carried the carbon zone or by the various configurations of the rod of membrane-enclosed year material with carbon element of vapor phase porous.
Introduce the cigarette filter element of carbon and can remove the therefrom composition of the mainstream smoke of process.Especially, active carbon has the tendency that reduces the content that is present in some gaseous component in the mainstream smoke, causes the organoleptic properties of this cigarette to change.
Although carbon ribbon has filter tip to have these advantages, they are not widely adopted.Have been found that from the filter-tip mainstream smoke of carbon often have a kind of fragrance sign opposite, so they are not extensive use of in commercial cigarettes so far with consumer preference.
A kind of cigarette preferably is provided, its cigarette filter has been introduced and can have been absorbed and/or adsorb the gaseous component that is present in the main flow cigarette, favourable absorption/absorption is provided simultaneously, dilution and suction properties, and add carbon and/or other material of the fragrance of filter tip cigarette with increase consumer acceptability.
In addition, a kind of like this filter tip preferably is provided, it has the desirable time of staying in the zone of adsorbent/contain adsorbent, realize the pressure drop in dilution zone and adsorbent/absorbent downstream simultaneously, the gaseous component with minimizing is provided like this but has the acceptable suction properties of the aerosol spraying of acceptable taste and resistance to draw.
Summary of the present invention
According to the present invention, smoking product such as cigarette comprise tobacco rod and comprise adsorbent bed and the multicompartment filter tip of the fragrance release filter tip section that is positioned at the adsorbent bed downstream.In preferred embodiments, adsorbent still carries active carbon fragrance and that comprise high surface.Along with mainstream smoke aspirates by filter-tip upstream portion, gas phase cigarette composition is removed and fragrance is discharged by adsorbent bed.Other fragrance is released into wherein when mainstream smoke discharges filter tip section through fragrance then.Provide ventilation being limited in the amount of the tobacco of being burnt in each aerosol spraying process, and it is arranged on the position in adsorbent bed downstream to reduce the mainstream smoke speed by adsorbent bed.Preferably, the carbon bed comprises 90-120mg at least or higher carbon (under the complete filling condition) or 160-180mg or high-carbon (under 85% occupied state or good conditions) more, and it combines with other characteristics so that a kind of gas phase composition of obvious reduction mainstream smoke to be provided, comprise 90% or more the highland reduce by 1,3 butadiene, methacrylaldehyde, isoprene, propionic aldehyde, acrylonitrile, benzene, toluene, styrene and 80% or the highland cigarette of reducing the fragrance of acetaldehyde and hydrogen cyanide more.
Downstream fragrance releasing section all helps the fragrance sign with the carbon bed that is loaded with fragrance in all aerosol sprayings, but the fragrance contribution of tract in initial aerosol spraying process is greater than later aerosol spraying.On the contrary, bigger in the fragrance of the carbon bed contribution aerosol spraying process afterwards.Fragrance transmission therefore in whole smoking technical process be balance with consistent.
Advantageously, the present invention wishes to realize the most optimal retention time of cigarette in having the filter region of sorbent material, realizes also that simultaneously surrounding air is to the favourable dilution of this cigarette and cause the desired acceptable resistance to draw of most of smokers.
Aforementioned and other advantage of the present invention and will becoming below the characteristics obviously, and character of the present invention is by with reference to following detailed description of the present invention, appended claims and several figure of providing in the accompanying drawings and more be expressly understood.
The description of accompanying drawing
Those skilled in the art also obviously draw novel characteristics and the advantage of the present invention except above-mentioned in conjunction with the accompanying drawings reading following detailed description, and wherein similar reference number is meant like and wherein:
Fig. 1 is the side upward view that comprises tobacco rod (rod) and the filter-tip cigarette of multicompartment according to of the present invention, and its part is broken away with the explanation interior details;
Fig. 2 is the side upward view that comprises tobacco rod and the filter-tip cigarette of multicompartment according to of the present invention, and its part is broken away with the explanation interior details;
Fig. 3 is the segment sectional drawing according to the downstream fragrance releasing section of modification of the present invention;
Fig. 4 is the side upward view that comprises tobacco rod and filter-tip another cigarette of multicompartment according to of the present invention, and its part is broken away with the explanation interior details;
Fig. 5 is the side upward view that comprises tobacco rod and filter-tip another cigarette of multicompartment according to of the present invention, and its part is broken away with the explanation interior details;
Fig. 6 is the diagram that the carbon heap(ed) capacity of the hand-made cigarette that constitutes according to embodiment preferred shown in Figure 1 descends to methacrylaldehyde;
Fig. 7 A is the diagram that the carbon heap(ed) capacity of the hand-made cigarette that constitutes according to embodiment preferred shown in Figure 1 descends to 1,3 butadiene;
Fig. 7 B is the diagram that the carbon heap(ed) capacity of the machine-processed cigarette with the long chamber of 12mm that constitutes according to embodiment preferred shown in Figure 1 descends to 1,3 butadiene;
Fig. 8 is the side upward view that comprises tobacco rod and filter-tip another cigarette of multicompartment according to of the present invention, and its part is broken away with the explanation interior details;
Fig. 9 is the side upward view that comprises tobacco rod and filter-tip another cigarette of multicompartment according to of the present invention, and its part is broken away with the explanation interior details;
Figure 10 is the segment sectional drawing according to the downstream fragrance releasing section of modification of the present invention; With
Figure 11 is the side upward view that comprises tobacco rod and filter-tip another cigarette of multicompartment according to of the present invention, and its part is broken away with the explanation interior details.
Detailed description of the present invention
With reference to Fig. 1, embodiment preferred of the present invention provides a kind of cigarette 10, and it comprises the multicompartment filter tip 14 of the material bar that can take out 12 as broken tobacco and pitman 12 and core plug paper 16.When lighting cigarette 10, mainstream smoke is produced by tobacco rod 12 and filter tip 14 is passed through in suction.
At this, the upstream between the filter tip section and downstream contraposition and other characteristics are mutually described according to the direction of mainstream smoke by tobacco rod 12 suctions and through multicompartment filter tip 14 time.
Preferably, filter tip 14 comprises section 15 and mouth end (mouth sheet) assembly 22 that absorbent is carried in first upstream.In this first embodiment preferred, the section 15 of carrying absorbent comprises plug-space-Sai filter tip sub-component, the latter comprises central filter assembly 17, central filter assembly 17 separates to determine the tobacco end assembly 18 in chamber 19 between the two relatively, with the high surface that is arranged in chamber 19, the bed of absorbent charcoal material 20.Tobacco end assembly 18 neighbours comprise the cellulose acetate tow plug (A pull resistance @) with low resistance to draw in tobacco rod 12 and preferred.Preferably, tobacco end assembly 18 is made as far as possible short in the limit of the machine-processed ability of high speed and is preferably being comprised in the filter assembly of multicompartment filter tip 14 having minimum particle pull resistance.
Mouth end (oral cavity) assembly 22 be preferably the cellulose acetate plug or have in to other the suitable fiber of low particulate efficiency or the form of Web materials.Preferably, particulate efficiency is low, and danier selects to make multicompartment filter tip 14 to realize required total pull resistance with the total danier of macroscopic view.
The carbon of preferred adsorbent bed 20 is forms of granula and analog.Preferably, the carbon of embodiment preferred is high surface, and active carbon for example has the typical A STM order size that is used for cigarette industry or thinner cocoanut shell base carbon.The adsorption component of active-carbon bed adaptation mainstream smoke, especially, those of gas phase comprise aldehyde, ketone and other VOC and especially 1,3 butadiene, methacrylaldehyde, isoprene, propionic aldehyde, acrylonitrile, benzene, toluene, styrene, acetaldehyde and hydrogen cyanide.Can use the sorbent material outside the de-carbon, below explain.
For carbon granule 20, preferably, they have order size 10-70 and more preferably order size 20-50.
Preferred at least some, if not all adsorbent beds 20 be loaded with fragrance or otherwise be impregnated with adsorbent bed 20 that fragrance makes that the section 15 of adsorbent is carried in the upstream and not only adapt to ground and remove one or more gas phase cigarette compositions in the mainstream smoke, and release fragrance is to the mainstream smoke logistics.Preferably, fragrance is by in mixing (rolling) cylinder or in fluid bed flavouring agent is sprayed to the nitrogen as fluidizing reagent in addition on the batch of material of active carbon and adds carbon, but wherein on the carbon of flavouring agent subsequent spray in the bed.
Still with reference to Fig. 1, the central filter assembly 17 of multicompartment filter tip 14 preferably comprises the fiber filter tip material, preferred in to the cellulose acetate tow of low particulate efficiency and pull resistance, be loaded with the plug 26 of the yarn 27 of fragrance with one or more.Along with the main flow tobacco smoke is aspirated by central filter assembly 17 and along yarn 27, fragrance is released into the mainstream smoke logistics.The fragrance tape has filter tip bung can derive from American Filtrona Company, 8410 Jefferson DavisHighway, Richmond, Virginia 23237-1341 is described in UA-A-4 281 671 with the suitable structure that is used for central filter assembly 17, and this patent is incorporated the present invention into as a reference at this.
In preferred embodiments, central filter assembly 17 and its fragrance yarn 27 are positioned at and carry fragrance, the downstream of carbon bed 20.Preferred practice of the present invention comprises fragrance by perfuming carbon bed 20 be positioned at the release of the fragrance yarn 27 in its downstream, realizes taste and the balance of fragrance in smoking process, the transmission of unanimity like this.But the present invention can consider flavouring agent is arranged on assembly 17 or the carbon bed 20 individually, or in office how going up adds under the situation along one or more flavouring agents that plug is packed and/or core plug paper 16 carries.
One or more peripheries of preferred perforation 24 outer by core plug paper 16 on the position in center element 17 and 20 downstreams of perfuming carbon, preferably on the upstream end portion of center element 17 contiguous carbon beds 20, form.The preferred setting makes the buccal 9 of cigarette and the distance maximization between 24 of boring a hole, it preferably at least 12mm (millimeter) or the smokers' of making lip more do not stop and bore a hole 24.In addition, because diluent air is flowing in the upstream end portion of central segment 17 and introduces, itself has reduced the particulate efficiency of the downstream part of section 17, the provided upstream of long filter assembly 17 of ventilating is equipped with and helps design component 17 and obviously do not improve particulate efficiency so that higher (still medium) pull resistance to be provided, and helps the required low particulate efficiency of maintenance in center element 17 and whole filter tip 14 like this.
Preferably, ventilation level is preferably 40-60% and 45-55% more preferably from about in 6mg FTC tar transmission cigarette.
If cooperate with low particulate efficiency filter tip 14, it is believed that ventilation not only provides the dilution of mainstream smoke, and the decline of the amount of the influence tobacco of in aerosol spraying process respectively, burning.Ventilation has reduced the amount that therefore swabbing action of coal also is reduced in the tobacco of burning in the aerosol spraying process.As a result, the absolute magnitude of cigarette composition descends.Preferably, various filter assemblies (central filter section 17, tobacco end filter tip section 18, carbon bed 20 and mouth end assembly 22) have low particulate efficiency and ventilation and select to make the difference between the output of the required FTC tar transmission of cigarette and tobacco rod 12 to minimize.These arrangements have improved the carbon monoxide content of transmission cigarette and the ratio (CO/ tar ratio) of its FTC tar levels.On the contrary, existing practice is often at first established the output level of tobacco rod 12 and is utilized particle to filter so that desired level is reduced in the transmission of FTC tar.Often burn excessive tobacco and therefore of these existing practices has the common higher CO/ tar ratio that obtains than the present invention.
Advantageously, the present invention 24 downstreams that are positioned at carbon bed 20 of boring a hole, the mainstream smoke speed by carbon bed 20 descends and the time of staying of mainstream smoke in carbon bed 20 increases like this.The extra time of staying increases the validity of active carbon when reducing targeted mainstream smoke constituents again.Through perforation 24 and mixes with mainstream smoke and to dilute, dilute at the air of approximate extents 45-65% like this by acquisition by surrounding air for cigarette.For example, when 50% air dilutes, flow through cigarette upstream dilution perforations and reduce 50%, reduce cigarette speed 50% like this.
Preferably, the carbon bed comprises 90-120mg (milligram) or higher carbon (under the complete filling state) or 160-180mg or higher carbon (under 85% filling or better state) at least in chamber 19, by discharging in conjunction with the extra time of staying and above-mentioned fragrance, the cigarette of the fragrance of the gas phase composition in a kind of obvious reduction mainstream smoke is provided, comprise and reduce by 90% or higher by 1,3 butadiene, methacrylaldehyde, isoprene, propionic aldehyde, acrylonitrile, benzene, toluene, styrene and reduce by 80% or higher acetaldehyde and hydrogen cyanide.The carbon heap(ed) capacity that raises also guarantees to be enough to realize the suitable activity level of these reductions in whole expection storage life (6 months or lower) of product.
For example, the length of tobacco rod 12 length that is preferably 49mm and multicompartment filter tip 14m is preferably 34mm.The length of four kinds of filter assemblies of cigarette 10 in preferred embodiments is as follows: tobacco end assembly 18 is preferably 6mm; The length of carbon bed 20 is preferably 12mm (for carbon heap(ed) capacity 180mg); Center element 17 is preferably 8mm; Be preferably 8mm with mouth end assembly 22.In a word, the level of tar @ (FTC) is preferably 6mg (for aerosol spraying counting 7 or higher).All assemblies 17,18,20 and 22 have low particulate efficiency and preferred, and in all fibers or the network segment (17,18 and 22), tobacco end assembly 18 has minimum pull resistance and particulate efficiency, because it influences bigger in the ventilation upstream and therefore to mainstream smoke.Be different from those other fibers or net bed assembly, tobacco end assembly 18 is accepted mainstream smoke under the situation that does not have the diluent air logistics.
Tobacco rod 12 can be wrapped with conventional cigarette wrapper or banded paper and be can be used for this.Banded cigarette paper has the whole cellulosic strip 21 that becomes of being separated by, they around the finished cut tobacco rod of cigarette 10 to relax the mass burning rate of cigarette, the reduction possibility of lighting base material like this, placement if cigarette 10 is glowed thereon.US-A-5 263 999 and US-A-5 997 691 have described banded cigarette paper, and this patent is incorporated the present invention into as a reference at this.
Following Table I provides the details of the various assemblies of the cigarette shown in Figure 1 10 in the relevant accompanying drawing.
| Cigarette | 6mg FTC tar.50% ventilates |
| Total cigarette filter 14: | |
| Filter length, mm: | 34 |
| Core plug length, mm: | 38 |
| The filter tip pull resistance, mm H 2O: | 114 |
| Mouth end assembly 22: | |
| The tow product: | 3.0Y the total danier in danier/35,000 |
| The assembly pull resistance, mm H 2O: | 28 |
| Center element 17: | 1.8Y the total danier in danier/35,000 |
| The tow product | 46 (not ventilating)/about 30 (ventilations) |
| The assembly pull resistance, mm H 2O: | |
| Tobacco end assembly 18: | |
| The tow product | 5.0Y the total danier in danier/35,000 |
| The assembly pull resistance, mm H 2O: | 15 |
| Carbon 20: | |
| Cavity length, mm: | 12 |
| Weight, mg: | 180 |
| Chamber assembly pull resistance, mm H 2O: | 25 |
| Plug space plug assembly ( |
86 |
| The section pull resistance, mm H 2O: |
When understanding the above information that in table 1, provides, can recognize, the preferred pull resistance of center element 17 comprises not ventilation value and ventilation value, and ventilate by using according to the center element 17 of first embodiment preferred, the pull resistance of center element 17 approximate mouth end assembly 22 or about.Therefore, most of filter tip pull resistance is established in the downstream that ventilates, and advantageously these positions of arranging the pull resistance generation combine with the part that adds draft, and particulate efficiency can remain on reduced levels like this, contributes most required total pull resistance for filter tip simultaneously.
Preferably, tobacco end assembly 18 is the assemblies with minimum pull resistance and particulate efficiency, because it is in the upstream that ventilates and stand the undiluted logistics of mainstream smoke.Arrange by these, the tobacco end assembly minimizes in the influence of removing aspect the tar, like this output of the tar of tobacco rod minimize and at every turn the amount of the aerosol spraying tobacco of being burnt be minimized again.
In preferred embodiments, the particulate efficiency of whole filter tip 14 is preferably about 40-45%, for example measures down in USA/FTC smoking condition (35 cubic centimetres of aerosol sprayings in 2 seconds).
In preferred embodiments, the preferred about 10mg carbon of about 180mg carbon plus-minus that loads is more to realize that average 85% fills under the conventional cigarette situation (about 22-26mm) in the 12mm chamber.This fill level has been realized the relative industrial standard with 1,3 butadiene of methacrylaldehyde with this carbon amount, and 90% tar weighting of machine-processed cigarette (being called 1R4F cigarette) descends.
Can be near complete filling state 95% or the identical effect of higher time performance than the low-carbon (LC) heap(ed) capacity.At 70-100mg with more specifically under the carbon heap(ed) capacity of 90-120mg, compacting, the plug-space of complete filling-Sai filter tip provide 90% or higher methacrylaldehyde and 1,3 butadiene descend the level in 1R4F cigarette relatively.The amount of removing the required carbon of these cigarette compositions has obviously been saved in these arrangements, and obviously saves manufacturing cost.Compression and/or complete filling plug-space-Sai filter tip configuration are also providing more consistent performance aspect the mutual gas phase treatment of cigarette.
According to above content and with reference to figure 6, line A is by according to design shown in Fig. 1 embodiment preferred and have advancing of data point that the hand-made cigarette of the test in chamber 19 of fixing 10mm length establishes, like this in the advancing of data point, it is constant that the volume in chamber 19 keeps, and the carbon heap(ed) capacity increases to about 160mg by 100mg when the line A in Fig. 6 is mobile from left to right simultaneously.Advancing shows, if this cavity segment is filled with 100mg carbon (wherein significantly the space keeps unfilled a kind of state), carbon obviously descends in the validity aspect the minimizing methacrylaldehyde.
On the contrary, the line B among Fig. 6 is the advancing of the data point that cigarette produced with structure shown in the preferred embodiment, and wherein, cavity space is at or about the carbon volume, and packing space does not minimize and avoided by-pass flow at the carbon bed like this.Utilize these to change, the required validity of removing methacrylaldehyde can realize by the about 90-100mg of carbon heap(ed) capacity.On the contrary, line A do not realize in represented partially filled chamber required 90% or more methacrylaldehyde descend, be loaded with obviously relatively large carbon, i.e. 160mg or more until the chamber.
Similarity relation represents in Fig. 7 A, and its center line A represents to be similar on the structure the advancing of the data point that cigarette produced of Fig. 1 preferred embodiment, and wherein the long chamber of 10mm remains on constant volume, and the carbon heap(ed) capacity that is placed on simultaneously in the chamber increases to about 160mg by 100mg.Line B among Fig. 7 A represent to be similar to preferred embodiment on the structure but wherein cavity volume approximate carbon and make packing space not minimize and avoid the data of the cigarette of by-pass flow.These data show, be in filter tip under the complete filling state of about 80-100mg and be applicable to 1, the 3 required butadiene decline level (90% remove or better) that realizes, wherein as these at big basically amount (about 160mg) the online A of appearance down.
The tendency that online A of Fig. 7 A and line A support the data place to show shows that average 160mg carbon heap(ed) capacity realizes that about 90% 1,3 butadiene descends when about 85% fills.As can be seen, support the such test method of The data to produce, its lower limit of quantitation is lower than 0.45 microgram, wherein approximates 1,3 butadiene (each calculating) of 0.42 microgram as 1, the 3 butadiene decline of 90% shown in Fig. 7 A.Therefore, the validity reality that loads of the carbon that descends near 90%1,3 butadiene can descend greater than 90%.
Referring now to Fig. 7 B, it illustrates the relation of the carbon heap(ed) capacity of the machine-processed cigarette with the long chamber 19 of 12mm that constitutes according to Fig. 1 embodiment preferred to 1,3 butadiene levels.Fill level uses untamped fill method to measure by measuring cylinder.Wherein the tendency that is shown shows, have target and fill percentage 83%, machine-processed cigarette relatively for example the level in the 1R4F cigarette produce about 90% 1,3 butadiene descend these.Level in target average 85% or the relative for example 1R4F cigarette of higher percentage filling is used high surface in the 12mm chamber, 1,3 butadiene that active carbon produces greater than 90% descends.
Preferably, high surface area carbon has about 1000 meters squared per gram of specific area (meters squared per gram) or higher.
The smoking test is carried out the cigarette that is similar to preferred embodiment shown in Figure 1 on being provided with by the grade expert.If comprising, suction is positioned at not those cigarettes of the fragrance yarn element 27 in perfuming carbon bed 20 downstreams, they report the tobacco sign that has fragrance in several leading aerosol spraying process, but in aerosol spraying several times subsequently, detect less-than-ideal fragrance and annotate, be considered to that more conventional charcoal @ cigarette is common.In addition, those test cigarette that do not have fragrance releasing member 27 if suction comprises perfuming carbon bed 20 in the downstream of perfuming carbon bed 20, expert smoker report, several leading aerosol spraying have less-than-ideal more conventional charcoal @ cigarette common fragrance annotate, but after several leading aerosol spraying, experience more fragrant tobacco sign.On the contrary, if be similar to Fig. 1 preferred embodiment on the expert smoker suction structure, comprise the cigarette of the fragrance yarn element 27 in the downstream that is positioned at 20 in perfuming carbon, their report in all aerosol spraying processes of test cigarette the tobacco smoke of balance more.
Be reluctant to be confined to theory, it is believed that filter tip section operate together with discharge fragrance to two kinds of sources of cigarette logistics and fragrance in smoking process balance the fragrance and the taste of mainstream smoke.Believe that further the fragrance body at center element 17 places of fragrance yarn 27 is early discharged, and this release weakens along with the time, the fragrance that is discharged by carbon bed 20 increased along with the time simultaneously, and fragrance discharges in smoking cigarette more subsequently.Carbon bed 20 and center element 17 or near the fragrance balance that had cigarette 10 the fragrance transmission and improve storage life.
In the embodiment preferred of Fig. 1 and other, the preferred amounts of flavouring agent heap(ed) capacity is 3-6mg (in a carbon 20), more preferably from about 4 or 5mg and similarly, and the preferred amounts of flavouring agent heap(ed) capacity is 3-6mg (in a yarn 27), more preferably from about 4 or 5mg.Be appreciated that the 180mg heap(ed) capacity of perfuming carbon comprises flavouring agent referred in this.
Referring now to Fig. 2, another embodiment preferred provides a kind of to be had the filter tip section identical with the cigarette 10 of Fig. 1 but has the cigarette 10A of the modification of slightly different intersegmental mutual arrangement, and similar reference number is used to represent like.In cigarette 10A, fragrance discharges the mouth end assembly 22 that yarn element 27 is arranged in oral cavity (mouth) end of cigarette 10A, in the downstream of perfuming carbon bed 20 and be separated with center element 17.In this embodiment, plasticizer such as glyceryl triacetate can be administered on the fragrance yarn 27 yarn is held in place in the assembly 17 and prevents that yarn from extracting out in smoking process from filter tip.In addition, fragrance yarn 27 can be woven together to realize identical result.As first embodiment preferred, provide on the position in 24 but perfuming carbon bed 20 downstreams contiguous that ventilate at long central filter assembly 17.
Following Table II provides further details and the alternative to the various assemblies of Fig. 2 cigarette 10A.
Table II
| Descriptor | Fragrance-yarn/mouth end assembly 22 | Carry the | Adsorbent bed | 20 | | | |
| Length (mm) | 7-9 | 6-8 | 10-14 | 6 | 14mm is apart from mouth | ||
| Pull resistance (mm water) | 15-20 | 10-20 | 20-30 | 25-35 | 20-40％vent | ||
| 1 | Cellulose acetate | Cellulose acetate | Active carbon | Cellulose acetate | Before the | ||
| Material | |||||||
| 2 | Cotton thread | Coconut high surface 150-200mg | Carbon carbon paper on the tow | ||||
| Particulate efficiency | 10-15％ | 10-15％ | 12-20％ | 10-40％ | |||
| Substitute | Fragrance on CA filament bundle fragrance packing beyond the Great Wall | Impregnated carbon APS zeolite " other adsorbent " |
Be appreciated that above sign to second embodiment preferred (Fig. 2) can be applicable to first embodiment preferred (Fig. 1), understand certainly that in back one embodiment (Fig. 1), fragrance yarn 27 is arranged in central filter assembly 17.Back one permutation table reveals the more traditional appearance of the buccal of cigarette 10.
Fig. 3 has illustrated other the alternate embodiment of flavor-releasing component 17 shown in Fig. 1 and 2.Particularly, the cellulose acetate plug 50 flavor-releasing component 17A that comprise low particulate efficiency shown in Figure 3 are filled in packing 52 encirclements.Merge packing 54 and surround the remaining assembly (not shown) of plug packing and multicompartment filter tip 14.Fragrance supply to the outside of plug packing 52 or cellulose acetate plug 50 produced fragrance at 50 o'clock to fill in the cigarette process.In addition, fragrance can be supplied in the zone of cellulose acetate plug 50 and merge packing 54, or fragrance can be used as plasticiser component of plug 50 and introduces.
The fragrance system can select to be used for specific subjective amount (sweet taste, mouthfeel, fragrance, or the like) and selection be included in molecular weight ranges (influence boiling point, flash-point, the environment steam pressure, or the like) interior composition to be to be retained in the granular active carbon.The fragrance system can given specification (granular size, measure active, ash content, pore size distribution, etc.) active carbon in store so that the fragrance system is released into the cigarette logistics with a kind of progressive controlled way.Be reluctant to be confined to theory, it is believed that the fragrance system is by the displacement of the half volatile component in the cigarette logistics, because these components are more firmly by charcoal absorption.It is believed that these cigarette components generally have the molecular weight higher than the composition in the fragrance system.Because different absorption, realized the sights in the different energy of adsorption of carbon and the possibility of heat of adsorption, be adsorbed the release gradually that produces the fragrance system along with increasing half volatile cigarette component.
Be reluctant to be confined to theory, the present invention has adopted following observable phenomenon: carrying have low heat of adsorption first adsorbate active carbon (or other adsorbent) have second adsorbable dose of big heat of adsorption in the presence of discharge a part of first adsorbate.Even it is believed that for highly the carrying active carbon, some active sites in the carbon still can be used for adsorbing second adsorbable dose, and if be adsorbed, the heat of adsorption of release can be used for discharging a part first absorbent in the carbon.More specifically, in the present invention, active carbon 20 is at first to be loaded with flavouring agent, and its preferred heat of adsorption of the organic gas composition of mainstream smoke relatively has enough low heats of adsorption.It is believed that the interaction of organic gas composition of mainstream smoke that the present invention has utilized the remaining active sites in the carbon 20 of year flavouring agent and had the process of higher heat of adsorption, gained heat is in order to drive away the mainstream smoke of (release) a part of flavouring agent to process.
Fig. 4 shows another cigarette 10B that comprises tobacco rod 12 and be connected to the multicompartment filter tip 14 on the rod with core plug paper 16.Filter tip 14 comprises plug-space-Sai, carbon filled-type filter tip section 15, and wherein a large amount of berths of perfuming material with carbon element 20 are between first and second filler plugs 18,26.Preferably, plug 18 and 26 comprises cellulose acetate tow and tow 26 with low particulate efficiency respectively and comprises one or more yarns that is loaded with fragrance 27.In addition, cellulose acetate plug 18 can be interspersed with carbon as required.
On plug 26 or near perforation 24 dilute mainstream smoke by surrounding air and be reduced in the amount of the tobacco of burning in the aerosol spraying process respectively.Ventilation has reduced in the aerosol spraying process institute particle (tar) and gas phase (CO) composition that produce and transmit.
The cigarette 10C that Fig. 5 shows is very similar to cigarette 10B shown in Figure 4, and similar reference number is used to represent like.But cigarette 10C is recessed at buccal 60 places, and can utilize too much core plug paper 62.
Fig. 8 illustrates another cigarette 10D of the present invention, and the element that wherein is similar to cigarette 10A (Fig. 2) is marked with similar reference number.Cigarette 10D also comprises multicompartment filter tip 14D but pull resistance filter tip bung 30 is used for substituting second cellulose tow 22 of cigarette 10A.Filter tip bung 30 between absorbent charcoal material 20 and flavor-releasing component 17 and fill in 30 can comprise at its upstream end one seal by curling do not see through hollow plastic pipe.US-A-4 357 950 has described this plug, and this patent is incorporated the present invention into as a reference fully at this.In addition, these filter assemblies can derive from aforementioned American Filtrona Company (Richmond, Virginia).Because filter tip bung 30, transition region 32 is provided to the general ring shaped cross-section zone 36 with high pressure drop by the general circular cross-sectional region 34 of the absorbent charcoal material 20 with low pressure drop.This transition region and perforation 24 the downstream location mainstream smoke upstream that causes boring a hole has high the stop or the time of staying.As a result, the favourable decline of gaseous component realizes in each aerosol spraying of cigarette 10D, follows the favourable dilution and the acceptable suction properties of surrounding air.Fragrance is released into the mainstream smoke of dilution when its process flavor-releasing component 17.As in other embodiment preferred, preferably, adsorbent bed 20 comprises and carries fragrance, active carbon.
For example, the length of the tobacco rod 12 of cigarette 10D can be that the length of 45mm and multicompartment filter tip 14D can be 38mm.The length of four filter tip sections of filter tip 14D is as follows: cellulose acetate tow 18 is 6mm; Material with carbon element length is 10mm; Filter tip bung 30 is 14mm; With flavor-releasing component 17 are 8mm.Totally, the FTC tar levels can be 4-10mg.
The plastic tube that curls is not used for cigarette 10D through the element that transits to the high pressure drop zone by high time of staying zone with influence as a kind of basically to gas or vapor phase component.Can consider to use other shape, as taper shape or flush end.In addition, also can use solid-state components, as element or the solid bar of making by high density (with therefore not seeing through) cellulose acetate tow, as shown in Figure 9, for example and be described below.Can consider that also other does not see through membrane structure.
In addition, as mentioned above, tobacco rod 12 can be used for this with conventional wrapper or banded paper.Banded cigarette paper has the plain band of conjugate fiber at the interval that surrounds cigarette 10D finished cut tobacco rod to change the mass burning rate of cigarette.In addition, carrying the assembly of absorbent can be separately or be used in combination with the section 15 of carrying absorbent of multicompartment filter tip 14D.
Following Table III provides further details and the alternative to the various assemblies of cigarette 10D of Fig. 8.
Table III (Fig. 8 assembly)
| | Produce the | | | | |
| Length (mm) | 6-8 | 14-16 | ?10-12 | ?6 | 19mm is apart from mouth |
| Pull resistance (mm water) | 15-20 | 70-80 | ?20-30 | ?15-20 | ?40-65％vent |
| Particulate efficiency | 10-15％ | 15-20％ | ?15-20％ | ?10-20％ | |
| Material | The cellulose acetate cotton thread | The COD* pull resistance produces agent | Active carbon coconut high surface 120-180mg | Carbon carbon paper on the cellulose acetate tow | Before the perf |
| Fragrance perfuming plug packing on the fragrance plug packing on the CA filament bundle | Examine the pipe in the TWA** tow with one heart | Impregnated carbon APS zeolite " other adsorbent " |
* COD=carbon monoxide dilution
* TWA (thin packing acetic acid esters) referring to US-A-4 614 199 and US-A-4 675 064, incorporates it into the present invention as a reference at this
Cellulose acetate: all danier scopes of all above filter tip bungs are 3.0-8.0dpf.
The element that Fig. 9 illustrates another cigarette 10E of the present invention and is similar to cigarette 10D is marked with similar reference number.Cigarette 10E also comprises multicompartment filter tip 14E, but examines ACOD@ or carbon monoxide dilute filtration mouth plug 30 that filter tip bung 40 is used for substituting cigarette 10D with one heart.Filter tip bung 40 and is filled in 40 and can be included in the height that its outside surrounded by inefficient cellulose acetate tow 44 and not see through solid circles cylindricality rod 42 between absorbent charcoal material 20 and flavor-releasing component 17.Because filter tip bung 40, the drastic shift zone is supplied to the general ring shaped cross-section zone with high pressure drop by the general circular cross-sectional region of the absorbent charcoal material 20 with low pressure drop.This transformation and 24 the downstream location of boring a hole cause the boring a hole height of mainstream smoke upstream stops or the time of staying, the explanation of for example above cigarette 10D for Fig. 8.
For example, the length of the tobacco rod 12 of cigarette 10E can be that the length of 45mm and multicompartment filter tip 14E can be 38mm.The length of four filter assemblies of filter tip 14E is as follows: cellulose acetate tow 18 is 6mm; Material with carbon element length is 10mm; Filter tip bung 40 is 14mm; With flavor-releasing component 17 are 8mm.Totally, tar @ level can be 4-10mg.
In cigarette 10E, cigarette is by diluting with the air of realizing air dilution rate 45-65% through perforation 24 and with cigarette.As cigarette 10D, under 50% air dilution, reduce 50% through the flow of the cigarette 10E of dilution perforations upstream, reduce cigarette speed 50% like this, be increased in 2 times of time of staying in the filter tip bung 20 basically.
The tobacco rod 12 of cigarette 10E can have been packed routine or banded paper as mentioned above, and the section of year absorbent can be used in combination with the section 15 of carrying adsorbent of multicompartment filter tip 14E separately or as required.
In addition, filter tip bung 40 can make up feasible flow wherein basically by nuclear with one heart, flows through the annulus outside the nuclear simultaneously limitedly.
The alternate embodiment of the flavor-releasing component 17 shown in Figure 10 key diagram 8 and 9.Particularly, flavor-releasing component 17 shown in Figure 10 ' comprise the cellulose acetate plugs 50 that surrounded by plug packing 52 with low particulate efficiency.Merge packing 54 and surround plug packing and the filter-tip remaining assembly of multicompartment.Fragrance is administered on the plug packing 52 or the outside of cellulose acetate plug 50 produced fragrance at 50 o'clock to cross plug at cigarette stream.In addition, fragrance can be administered in cellulose acetate plug 50 zones and merge on the packing 54, or fragrance can be used as the plasticizer assembly of plug 50 and introduces.
The element that Figure 11 illustrates another cigarette 10F of the present invention and is similar to cigarette 10E is designated as similar reference number.Cigarette 10F comprises multicompartment filter tip 14F, comprise be fit to therefrom the mainstream smoke of process remove one or more cigarette composition upstreams and carry the section 15 of adsorbent and be used to discharge fragrance to the downstream flavor-releasing component 17 of the mainstream smoke of process therefrom.
The difference of the flavor-releasing component 17 of cigarette 10F is that it comprises the filter tip bung 40 that is positioned at absorbent charcoal material 20 downstreams.Plug 40 comprises by what inefficient cellulose acetate tow 44 was surrounded and sees through solid circles cylindricality rod 42 relatively or highly, and fills in 40 26S Proteasome Structure and Function and be similar to shown in Figure 9.But plug 40 shown in Figure 11 is included in the fragrance that merges on the packing 54, and it is discharged in the mainstream smoke of flowing through component 17.
For example, the length of the tobacco rod 12 of cigarette 10F can be that the length of 45mm and multicompartment filter tip 14F can be 38mm.The length of three filter assemblies of filter tip 14F is as follows: cellulose acetate tow 18 is 6mm; Material with carbon element length is 16mm; With filling in 40 are 16mm.Overall tar levels can be 4-10mg.
In cigarette 10F, cigarette dilutes by the air that mixes to realize air dilution rate 45-65% through perforation 24 and with cigarette.These dilutions also are used for increasing the time of staying of cigarette in carbon granules agent 20, and are as explained above.
Although the present invention describes and describes according to embodiment preferred, can recognize, change and change not deviating under the situation of the present invention that claims summarize.Therefore, plug-space-Sai section 15 or carbon bed 20 are substitutable for the carbon element or the suitable adsorbent of removing other form of gaseous component from mainstream smoke of gathering.Therefore, the carbon bed also can comprise the combination of carbon and fiber.In addition, the filter-tip material outside plug assembly can be mentioned by this paper is specific and constituting.Ventilation can be used engagement and connector means or off-line technology and make.
In addition, the present invention can be applicable to have the cigarette of various peripheries, narrow cigarette and wide cigarette.In addition, although the present invention is preferably applied to not aromatic tobacco rod, also can consider the perfuming tobacco-containing material.
Claims (43)
1. cigarette, it comprises tobacco rod and comprises adsorbent bed and the multicompartment filter tip that is positioned at the ventilation in described adsorbent bed downstream, described adsorbent bed and vented construction are arranged to remove at least a cigarette composition in the main flow tobacco smoke when mainstream smoke suction process filter tip, and at least one flavor-releasing component structure is arranged to discharge fragrance to mainstream smoke, and described flavor-releasing component is positioned at the downstream of described adsorbent bed on the suction process direction of filter-tip mainstream smoke.
2. according to the cigarette of claim 1, wherein said adsorbent bed comprises the active carbon that is loaded with flavouring agent.
3. according to the cigarette of claim 2, wherein flavor-releasing component comprises and is positioned at the described long filament that is loaded with flavouring agent that is loaded with the active carbon downstream of flavouring agent.
4. according to the cigarette of claim 3, in the determined chamber, described chamber is at least 85% state of filling to wherein said adsorbent bed between tobacco end filter assembly and central filter assembly.
5. according to the cigarette of claim 4, the contiguous described tobacco rod of wherein said tobacco end filter end module position, described central filter assembly has the end parts of contiguous described adsorbent, and described filtration is on the position of the described contiguous upstream end portion of described central filter assembly.
6. according to the cigarette of claim 5, wherein said degree of ventilation is the mouth end filter assembly that 45-55% and wherein said multicompartment filter tip further are included in described central filter assembly downstream.
7. according to the cigarette of claim 6, wherein said tobacco end filter assembly, described central filter assembly, described adsorbent bed and described mouth end filter assembly have and are not higher than 40% particle filter efficiency.
8. according to the cigarette of claim 7, the resistance to draw level of wherein said mouth end assembly and described central filter assembly is greater than the resistance to draw of described tobacco end filter assembly.
9. cigarette according to Claim 8, wherein said ventilation comprise the perforation of the circle of one on the circumference that passes core plug paper, and described core plug paper is connected to described multicompartment filter tip on the described tobacco filter rod.
10. according to the cigarette of claim 9, the position of wherein said ventilation is apart from the buccal of cigarette 12mm at least.
11. according to the cigarette of claim 3, wherein flavor-releasing component comprises the cellulose acetate plug that has flavouring agent on it.
12. according to the cigarette of claim 3, wherein flavor-releasing component comprises the cellulose acetate plug of the plug packing encirclement that is had flavouring agent on the plug packing.
13. according to the cigarette of claim 3, wherein the adsorbent section of carrying comprises 90mg at least and is in active carbon under the complete filling state.
14. according to the cigarette of claim 3, wherein adsorbent bed comprises the high surface active carbon; At least 90mg be under the complete filling state described carbon or at least 160mg be in described carbon under at least 85% occupied state.
15. according to the cigarette of claim 3, wherein adsorbent bed comprises high surface active carbon 90mg at least under the complete filling state.
16. according to the cigarette of claim 1, wherein the multicompartment filter tip comprises a plug form assembly, this assembly determines that one transits to the flow channel of general ring-type from general circle, increases pressure drop and the time of staying of main flow tobacco smoke in filter tip like this.
17. according to the cigarette of claim 1, wherein the multicompartment filter tip comprises the assembly of the plug form of the flow contraction that the adsorbent bed downstream is provided.
18., wherein provide the plug of the flow contraction in adsorbent bed downstream to determine the annular flow passage according to the cigarette of claim 17.
19., wherein provide the plug of the flow contraction in adsorbent bed downstream to determine the center flow passage according to the cigarette of claim 17.
20., wherein provide the plug of the flow contraction in adsorbent bed downstream to comprise concentric filter tip according to the cigarette of claim 17.
21. the multicompartment filter tip of smoking product comprises:
The adsorbent section of carrying of contiguous filter tip upstream end portion, the adsorbent section of carrying has the particulate efficiency and first pull resistance of 10-20%;
Comprise the pull resistance section of inducing that flow shrinks and ventilates, the described pull resistance section of inducing is positioned at along described filter-tip centre position, and the described pull resistance section of inducing has the particulate efficiency of 10-20%; With
At the fragrance releasing section on described filter-tip downstream position, described fragrance releasing section has the particulate efficiency and first pull resistance of 10-20%;
Described first pull resistance is lower than the pull resistance of the pull resistance section of inducing.
22. according to the multicompartment filter tip of claim 21, the upstream end portion of the contiguous pull resistance section of inducing of wherein ventilating.
23. one kind comprises tobacco rod and the filter-tip cigarette of multicompartment, described filter tip comprises: at least one structure is arranged to discharge fragrance and is removed the fragrance releasing section that is loaded with adsorbent of at least a cigarette composition in the main flow tobacco smoke during through filter tip to the main flow tobacco smoke with when the mainstream smoke suction, be arranged to discharge other the fragrance releasing section of additional fragrance with at least one structure to mainstream smoke, described other fragrance releasing section in suction through being positioned at the downstream of the fragrance releasing section that is loaded with adsorbent on the direction of filter-tip mainstream smoke.
24. according to the cigarette of claim 23, wherein other fragrance releasing section comprises the yarn that has flavouring agent on it.
25. according to the cigarette of claim 23, the fragrance releasing section that wherein is loaded with adsorbent is included in the active carbon that has flavouring agent on the carbon.
26. according to the cigarette of claim 23, the fragrance releasing section that wherein is loaded with adsorbent comprises three filter assemblies, is included in the active carbon that has flavouring agent on the carbon and cellulose acetate tow assembly in the relative both sides of active carbon.
27., comprise that encirclement multicompartment filter-tip core plug paper and the perforation in the core plug paper in the fragrance releasing section downstream that is loaded with adsorbent are to introduce suction through filter-tip main flow tobacco smoke with surrounding air according to the cigarette of claim 23.
28. according to the cigarette of claim 23, wherein other fragrance releasing section comprises the cellulose acetate plug that has flavouring agent on it.
29. according to the cigarette of claim 23, wherein said other fragrance releasing section comprises the cellulose acetate plug that the plug packing that had flavouring agent on the plug packing is surrounded.
30. according to the cigarette of claim 23, the fragrance releasing section that wherein is loaded with adsorbent is included in the carbon granules agent that has flavouring agent on the granula.
31. according to the cigarette of claim 30, the fragrance releasing section that wherein is loaded with adsorbent is included under the complete filling state at least the described carbon of 90mg or the described carbon of 160mg at least under at least 85% occupied state.
32. one kind comprises tobacco rod and comprises the filter-tip cigarette of following multicompartment:
Adsorbent bed discharges filter tip section with the fragrance that is positioned at the adsorbent bed downstream, described adsorbent be loaded with fragrance and comprise the high surface active carbon, like this when mainstream smoke aspirates by filter-tip upstream portion, gas phase cigarette composition is removed with fragrance and is discharged by adsorbent bed, and other fragrance is released into the mainstream smoke that discharges filter tip section through fragrance then;
The locational filter tip that is arranged in the adsorbent bed downstream ventilates, and reduces the mainstream smoke speed by adsorbent bed like this; With
Described carbon bed is included under the complete filling state at least the described carbon of 90mg or the described carbon of 160mg at least under at least 85% occupied state;
Wherein said cigarette is realized at least 80% reduction of the gas phase composition of mainstream smoke.
33. according to the cigarette of claim 32, wherein cigarette is significantly reduced the gas phase composition of mainstream smoke, comprise 90% or more the highland reduce by 1,3 butadiene, methacrylaldehyde, isoprene, propionic aldehyde, acrylonitrile, benzene, toluene and styrene.
34. according to the cigarette of claim 32, wherein cigarette is obviously reduced the gas phase composition of mainstream smoke, comprise 80% or more the highland reduce acetaldehyde and hydrogen cyanide.
35. one kind comprises tobacco rod and comprises the filter-tip cigarette of following multicompartment:
The adsorbent bed that comprises the high surface active carbon, when mainstream smoke aspirated by filter-tip upstream portion, gas phase cigarette composition was removed like this;
The locational filter tip that is arranged in the adsorbent bed downstream ventilates, and reduces the mainstream smoke speed by adsorbent bed like this; With
Described carbon bed is included under the complete filling state at least the described carbon of 90mg or the described carbon of 160mg at least under at least 85% occupied state; With
The mouth end of the described cigarette of described filter tip ventilation distance is 12mm at least;
Wherein said cigarette is realized at least 80% reduction of the gas phase composition of mainstream smoke.
36. multicompartment cigarette filter, comprise: at least one structure is arranged to discharge fragrance to main flow tobacco smoke and the fragrance releasing section that is loaded with adsorbent of removing at least a cigarette composition in the main flow tobacco smoke, be arranged to discharge other the fragrance releasing section of additional fragrance to mainstream smoke with at least one structure, described other fragrance releasing section is positioned at the downstream of the fragrance releasing section that is loaded with adsorbent.
37. according to the filter tip of claim 36, wherein said other fragrance releasing section comprises the yarn that has flavouring agent on it.
38. according to the filter tip of claim 36, the fragrance releasing section that wherein is loaded with adsorbent is included in the active carbon that has flavouring agent on the carbon.
39. according to the filter tip of claim 36, the fragrance releasing section that wherein is loaded with adsorbent comprises three filter assemblies, is included in the active carbon that has flavouring agent on the carbon and cellulose acetate tow assembly in the relative both sides of active carbon.
40. according to the filter tip of claim 36, wherein said other fragrance releasing section comprises the cellulose acetate plug that has flavouring agent thereon.
41. according to the filter tip of claim 36, wherein said other fragrance releasing section comprises the cellulose acetate plug that the plug packing that had flavouring agent on the plug packing is surrounded.
42. according to the filter tip of claim 36, the fragrance releasing section that wherein is loaded with adsorbent is included in the carbon granules agent that has flavouring agent on the granula.
43. according to the filter tip of claim 42, the fragrance releasing section that wherein is loaded with adsorbent is included under the complete filling state at least the described carbon of 90mg or the described carbon of 160mg at least under at least 85% occupied state.
Applications Claiming Priority (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US27069801P | 2001-02-22 | 2001-02-22 | |
| US60/270,698 | 2001-02-22 | ||
| US29242601P | 2001-05-21 | 2001-05-21 | |
| US60/292,426 | 2001-05-21 |
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| CN1503637A CN1503637A (en) | 2004-06-09 |
| CN1216556C true CN1216556C (en) | 2005-08-31 |
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|---|---|---|---|
| CN028086627A Expired - Fee Related CN1216556C (en) | 2001-02-22 | 2002-02-22 | Cigarette and filter with downstream flavor addition |
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